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May Weather in Alto San Ildefonso, Peru

Last updated: August 27, 2025

In Alto San Ildefonso, Peru, the average temperature in May is a pleasant 20°C (69°F). You can expect minimum temperatures to dip to 15°C (59°F) and peak at 27°C (80°F). Expect a bit of moisture, with precipitation averaging 10 mm (0.4 in) spread over 3 days. Additionally, the air feels fairly humid, with an average humidity level of 78%.

May Temperature in Alto San Ildefonso

In May in Alto San Ildefonso, the average temperature is 20°C (69°F). Maximum temperatures can reach 27°C (80°F), while minimums can dip as low as 15°C (59°F). This makes it an ideal time for travelers to explore the outdoors while enjoying pleasant weather.

May Weather in Alto San Ildefonso: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Alto San Ildefonso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alto San Ildefonso, May typically has an average temperature of 20°C (69°F), with highs reaching up to 27°C (80°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec727474716967656464656669
Data source: Temperature data for Alto San Ildefonso generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Alto San Ildefonso

In Alto San Ildefonso in May, the precipitation amount is 10 mm (0.4 in) over a period of 3 days.

May Precipitation Trends in Alto San Ildefonso

The chart displays monthly precipitation patterns in Alto San Ildefonso, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Alto San Ildefonso, May typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec3041632410233591030
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Alto San Ildefonso

In Alto San Ildefonso in May, humidity is 78%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick and heavy, urging you to seek out shaded areas and refreshing drinks.

May Average Humidity in Alto San Ildefonso

This chart illustrates the average monthly humidity levels in Alto San Ildefonso, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Alto San Ildefonso is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%88%85%78%62%44%38%42%58%69%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Alto San Ildefonso

In Alto San Ildefonso in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Alto San Ildefonso.

Maximum UV Index Levels in Alto San Ildefonso for May

The chart shows the monthly maximum UV Index (UVI) for Alto San Ildefonso in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Alto San Ildefonso typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141515141211111114141313
Data source: Alto San Ildefonso May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Alto San Ildefonso Compares to Other Months

Weather in Alto San Ildefonso varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Alto San Ildefonso, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Alto San Ildefonso, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)30 mm (1.2 inches)83%extreme
February Weather24°C (75°F)41 mm (1.6 inches)81%extreme
March Weather24°C (75°F)63 mm (2.5 inches)88%extreme
April Weather22°C (72°F)24 mm (0.9 inches)85%extreme
May Weather20°C (69°F)10 mm (0.4 inches)78%extreme
June Weather19°C (67°F)2 mm (0.1 inches)62%extreme
July Weather18°C (65°F)3 mm (0.1 inches)44%extreme
August Weather18°C (65°F)3 mm (0.1 inches)38%extreme
September Weather18°C (64°F)5 mm (0.2 inches)42%extreme
October Weather18°C (65°F)9 mm (0.3 inches)58%extreme
November Weather19°C (66°F)10 mm (0.4 inches)69%extreme
December Weather21°C (69°F)30 mm (1.2 inches)82%extreme

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